Re: networking / web perf probs

Andi Kleen (
14 Dec 1997 14:07:48 +0100

Chris Wedgwood <> writes:

> Anyway, I'm guilty of not diving into the code to see if this is fixed.
> If noone says "yes it is" or "no it isn't", I'll try and figure it out
> but I'll bet somebody out there already knows.
> I think its done via sysctl now:
> [root:3] caffeine:~# cat /proc/sys/net/ipv4/tcp_max_syn_backlog
> 1024

This sysctl is not active unless you compile tcp_ipv4.c with -DNEW_LISTEN.
For IPv6 it is not even implemented. The code is still very experimental.